/Engine/Source/Editor/Kismet/Public/FindInBlueprintManager.h
This function ensures that the passed in search query ends in a safe manner. The search will no longer be valid to this manager, though it does not destroy any objects. Use this whenever the search is finished or canceled.
void EnsureSearchQueryEnds ( const class [FStreamSearch](API\Editor\Kismet\FStreamSearch) * InSearchOriginator )